Spencerisporites mcgregorii
- Citations total:
- 2
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| details | Late Meramecian | Chesterian | Canada(NWT) | Braman,D.R. et al. Palynology and paleoecology of the Mattson Formation, northwest Canada. | 1977 |
| details | Late Visean | Early Namurian A | Spitsbergen | Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. | 1980 |